Type-writing machine.



A. '1'. BROWN. TYPE wnrrnm momma. APPLIOA'HOI FILED JUNE 20, 1906. EEIBWED KAY 8, 1908.

903,444. Patented Nov. 10, 1908.

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FIG]! WITNESSES.-

AfTQR/YEY.

A. T. BROWN.

TYPE WRITING MACHINE.

APPLICATION FILED .nnn: 20, 1906. nnnnwnn In a, 1908.

903,444. Patented Nov. 10,1908.

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'II/IIIIIIIIIII zwnvessas: 11v VEN TOR.

A -MA, 24 ,01. 1 75 V B V |G-5 ATTORNEY.

ALEXANDER '1. BROWN, OF SYRACUSE, NEW YORK.

' TYPE-WRITEN'G HAGHIKE'.

Specification of Letters Patent.

- PatentedNov. 10, 1908.

Application flied June 20, 1906, Serial No. 322,585. Renewed May 8, 1908. I Serial No. 431,663;

To all whom it may comer'n: Be it known that LALEXANDER T. BROWN, citizen of the United States, and resident of Syraciise, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification,

My invention relates to typewritin'g maohinesand it has for itsprincipal object to rovide improved carriage release mechanism for-such machines.

.My invention consists in certain features of construction and combinations and arran ements of parts, all of whichwill be fully set orth herein and particularly pointed out in the'c-laims. I

In the accompanying drawings, Figure 1 is a front to rear vertical sectional view of a part of a ty ewritin machine having my inventioneiniiodied therein. Fig. 2 is a rear elevation of a part of the typewrit'ing machine, certain parts being shown in section. Fig. 3 is a fragmentary view of part of the mechanism in vertical section through the axis of a shaft .forr'ning part ofthe carriage feed mechanism. I

My invention is applicali le to various styles, of typewriting machines but I have 30 here shown t applied to a front-strike typewriter. The main frame of the machineshown in the drawings, comprises side pieces 1 connected to etherat their rear ends by a back" 85 plate 2. osts 3, rising from or formin part of the side plates 1, support a top ate 5 from which rise two posts or standiirds 6 which support a stationary carriage rail 7 having its opposite edges grooved, forming 4 ball races for anti-friction balls or rollers 8.

Theplaten 10 has a shaft 11 by which said platen is supported in a carriage comprising endpieces 12 connected together by carriage rails 13 and 15 which cooperate with t e balls 8 and the stationary rail 7 to support the carriage.

A feed rack 1.6 is secured to the under side of the lower forward carriage rail 13 and has meshing therewith two gearwheels 17 and 18, both mounted on a shaft 20 which is jour naled in frame plates 21 and 22 forming part of a framework which is secured to the under side of the top) plate 5, This. framework, comprises mom ers 23and 25 extending in 55 fore and aft direction and connecting the plates 21 and 22. The carr'ageis propelled provided across the machine by a spring 26 coiled about the shaft- 20 and within a springdrun'i 27. One endofthe spring 26is operatiyely connected in any suitable manner with the gear wheel 17 and the other end of said spring is connected with the shaft 20 by turning which, one way .or the other, the tension. on the sprin may be regulated. The rear end of said s aft has a thumb piece 28 mounted thereon for this purpose.

The escapementmechanism is geared to I, the gear 18 which meshes with a inion' 30 mounted on a shaft 31 (Fig. 3) whic is journaled at its forward end in the frame plate 22 and at its rear end in an adjustable screw 32 threaded through the frame late 21 and with a lock nut 33. heshaft 31" carries a skew gear. .35 that meshes. with a skew inion 36 mounted on the lower end (pf- ,75 a she t 37 that extends at an inclination ward and toward the front of the'machine ;.:3' to a point beneath the' laten opposite'theg print-mg point. The sh t 37 is journaled M a bracket :38 which is secured to the front-. 80. face of the frame plate 22 and at its upper-Ii; end said shaft carries an arm 40 havinglan upwardly projecting tooth 41 v with w 'ji'chil two feed do 's 42 cooperate. Said feed dogs 7 are .mounter on or constitute the lower end iffi of a level-A3 that is pivoted at 45 to thd bracket 38 and the up er-end46 of which forms a small universa bar adaptedtobe struck by the type. bars when the latter are 7 thrown to the printing point.

The constructionis such that when any type' bar is thrown to the rinting point the tooth 41 escapes from the eed do and the shaft 37 is thus permitted to ma e a com-I plete rotation, and'the gearing is such that 515 this permits the carriage tojmovea distancy' corresponding to a single letter-a a The type bars 47 and 48 are mounted iiiifl two segments 50 and 51 respectivelirl W means of ball bearings cooperating po ripheral rooves in said se ments. Eachof the type ars carries at its Free end a type'52,

and near its free end each of thetypejbars; has a part 53 adapted to strike mamm ls;

bar 16 and operate the escapement nfehan' lfl isml The type bars are operated by link's'55 each connected at one end to the type b'ar' and at the other end to a sub-leve'ra 56 iv oted at 57 to a sub-lever segment o; sub-levers 56 are operatedby links (idem-11119 nected with the keys and ate-returned normal position by springs 61.; It has in mii- 30 and the sleeve .66 are eachforme with to chine and pe pend 00, tion I- have 05 J tsithe end of an arm 75 forming part of a- Q* 7 been thou describe t part of the present invention nor of the escapement and carriage feed mechanism which mechanism is not claimed herein but is Eht necessary to fully illustrate nor e type bar system as it forms no claimed inmy pending" application, Serial -No. 347,104 111 I clined carriage and therollerbearings therermshown in the present application are claimed in my sending application Serial No; 305,053 filed arch 9 1906. v

, .Asfar as the present invention is concerned any suitable form of carriage and type. bar mechanism and any suitable form of escapement mechanism may be em loyed. The inion 30 is not rigid y mounted on the sh t 31 but is loosely mounted on said shaft except that said mionis-not free to 1 n0ve endwise of thee aft. Such endwise motion towardthe front of the machine is prevented by-the engagement .of the hub 62 of said inion with a hub; 63 that. is rigidly :mounie on the shaft 31 and which carries the gear wheel35. 1

In order to prevent motion of the inion 7 toward the back of the machine the orward part, of the shaft 31 on which said pinion is mounted is made of reduced diameter, thus forming 'a shoulder- 65 against which the rear end of the pinion abuts.'

The rear end of the with ratchet clutch teet which engage with like teeth onthe forward end of, sleeve 66 mounted to turn with, but adapted to slide along,jthe shaft 31. Relative rotation of the shaft 3l'and sleeve'"66 is prevented b teeth 67 projecting from the rear end'of-sai sleeve .into slots formed in a flange 68 formed on the shaft-31. This connection, however, enables the sleve66to receive as ht sliding move- 'ment ,along the, shaft. a sleeve 66 is pressed toward' -the 'pim'onBO by a spring 70- com ressed between flan 4 71and 72 formed ontfesle'eve 66 and on .t e flange 68 respectively; The clutchteeth between the inion so lmonreformed one abrupt and one inclinedface so thet as the carriage is moved toward the left the pressure, comes on the abrupt-faces and the pinion cannot turn without. turning the sleeve 66 and shaft-31, but when the carriageis moved toward the nght'the pressurecomes on the inclined faces ofthe clutch teeth which cam the sleeve toward the rear of the ma- .'t the pinion to tum-indeeat] of the shaft. l In ordgr to release the from the step b'y-step feed mechanism so as to leave 'can'iage free to be moved in either direc'iprovided means for'forcing the sleeve or-eleteh memher'ee tewardthe rear A of the, machine against the tension of the spring70. To this end saidfsleeve formed 'thaperipheral'slot 73 in whih there pro ed Dec. 10,1906.- The inrockingmemp'erthat-is' ph -"ted to swing on a vertical a ms. Said rocking member comn upright part 76 having pins 77 at itsu and ower ends which project into suita le gtienings in-brackets 78 that project toward the front of the machine from. the frame plate 21, Near its upper endthe upright portion 76 of .therocking member has an arm 80 that projects '11 ward through a 'slot 81 in theto plate 5. his arm has the form shown inF igs; 1; and 2; that is to sa. ,it extends toward the middle of the mac 'ins ,and upward and toward the back of the ma-' chine and it has an anti-friction roller 82- mounted onits upper free end.. -As shown in the resent'instance, this u wardly andrearwar y extending part of ,t 1e arm 80 is made in aseparate piece 83 Whi'chis secured to the arm 80 by aIscrew 85 or in an suitable manner. The roller 82 stands be 'nd a yoke bar 86 which extends lengthwise of the carriage and is rigidly mountedon arms 87 that are pivoted to the carriage on shouldered and I eaded screws 88. a One' of. the arms 87 forms part of a'release key 'le'ver which alsopomg arm 90 having a thereon. I have :prises a forwardlyextendin release key 91 mounted v ,shownflonly one'rel'ease key, namely; that at the left-hand side of the carrI'ageQbUtit will beobvious that a similar key maybe mounted on the other end of "a carriage'if desired, The motion of the lever 90 about its pivot 88 is limited. by "a screw 92 that passesthrough ,a slot 93in the lever 90' and is threaded into I the end piece 12' of the carriage,- If the key .100 91 be depressed the yoke bar 86 will bemoved toward the rear of the machine, thus moving the arm 83and the arm 80 ofjthe rockingmember toward the rear ofthe machine. The arm will obviously partake of -thismotion and will move the clutch member 66 towardethe rear i'ofthe machine, thus releasing the pinion from said clutchmember and leaving it free to turn independently of the shaft 31.' 1 I It will be observed that the yoke bar 86' hangs down behind the carriage and the sta-. tio ary rail 7 and that it directly engages the .roc member which in turn. directly en- 1 gages t e movable clutch member so that the 115 construction of the release device is extremely sim e and convenient. "Various c anges may-be made in the de' tails of'co out departing from my invention.

'What I claim asnew and desire -to secure by Letters Patent,.is:

I. In a 't'ypewriting machine, the combination of a carriage; carriage feed mechanism comprising an escapement wheel 125 -2 r-i tesa d carriage and an intake clutch ;1a'nd a carriage release device comprising a-release ke a ypke frame mounted on the carriage and savings yoke barada' ted to be moved toward nstruction and arrangement witha the rear" of tlie'mac ine when the release key is operated, anda rock- I bar and adapted to operate saidclutch to ing member mounted to rock about a verl tical axis and having an .arm in position to co-actvrith said yoke bar when the release key is Operated and another arm adapted to engage a member of said clutch. i

2. In a typewriting machine, the combination of a carriage, a stepbystep' feed device for said carriage, a swinging yoke frame having a yoke bar hanging down behind the carriage and adapted to swing toward the back of the machine, a release key connected with said yoke frame, a member mounted on the stationary framework of the machine inposition to be moved by said yoke frame, and means operated by said member to release said carnage from said step-bystep feed device.

,3. In a typewriting machine, the combination of a carriage; a step-by-step feed device for said carriage, aswinglng yoke frame having 'a yoke bar han ing down behind the carriage and adapted to swing toward the back of the machine, a release key connected with said yoke frame, a ivot-ed member having two arms, one stan ingbehind said yoke bar in position to be moved by the latter, and means operated by the other arm to release the carriage from said stepbystep feed device.

4. In a typewriting machine, the combination of a carriage; an escapement, in-

- eluding an escapement wheel, for controlling said carriage: a clutch between said carriage and said escapement wheel; a swinging vokc frame having a yoke bar hanging down behind said carriage, a release key connected with said yoke frame; and a member mounted on the stationary framework of the ma- 40 chine in position to be moved by said yoke release the carriage from said escapement wheel.

5. In a typewriting machine, the combination of a main frame including a top plate, a carriage mounted above said top plate, a carriage feed device mounted beneath said top plate, and a carriage release device including a movable yoke frame mounted on the carriage and having a contact face which extends substantially throughout the length of the carriage, a rocking member pivoted beneath the top plate an having an arm extending up through said plate in position to be moved by said yolke frame at any oint in the travel of the carriage, and a clhtch mounted beneath said top late and 'unclutched by said rock-.

ing mem er. 6. In a typewriting machine, the combination of a main frame including a top plate, a carriage mounted above said top plate, a carriage feed device mounted beneath said to plate, and a carriage release device inclu ing a movable yoke. frame mounted on the carriage, a rocking member pivoted beneath the top plate to swing about a vertical axis and having an arm extending up through said to plate in position to be moved by said voe frame, and df'clutch mounted beneath said top late and unclutched by said rocking mem er.

Signed at Syracuse, in the county of Onondaga, and State of New York, this 12th day of June A. D. 1996.

ALEXANDER. T. BROWN,

\Vitnesses C. E. TOMLINSON, Geo. M. BLOWERS. 

